| 摘要 |
<p>On a flat weft knitting machine, the thread guide mechanism and adjusters have a hydraulic buffer system to stop these parts bouncing back off the stops, when the speed is raised. As the thread guide unit approaches the stop, it acts on the end of a buffer in the cylinder. This action starts to brake the movement, and as it finally approaches the stop, the air is driven out of the cylinder. The cylinder is double acting, has air bleeds to control the rate of dampening, and air from the atmosphere is sucked into the non-working side of a stroke. When the stroke of the thread guide is short the buffer can be taken out of action by hand or automatically by an electromagnet.</p> |
